Most parts in Europe, you drill a 100metre hole underground (some times even less) & you get clean, pure, fresh, drinkable water pouring out.. This water is so fkn clean, you don't even need any chemicals or anything artificial to make it pure.. It's x100 cleaner than the water we drink from our taps thats for sure.
Here in Aus, we don't even have that..
What Aus could do is, import New Zealand water.. I'm sure New Zealand is more of a tropical area, receives plenty of rainfall. All we need is a under-sea water pipeline from New Zealand to Melbourne. Pipelines such as these are already active through out the world e.g. the sphincter of the universe exports fresh water to Israel via underground & undersea pipelines.. the sphincter of the universe also exports water to North Cyprus via undersea pipelines.